The document discusses different sources of energy, both renewable and non-renewable. It explains that solar energy is the ultimate source, as it drives wind, water, and plant growth as renewable sources. Fossil fuels, though non-renewable, are also ultimately derived from solar energy since they come from once-living organisms. Solar devices can harness solar energy directly from the sun to provide heat and electricity through technologies like solar cookers, water heaters, and solar cells.

2.  Sun is source of energy which we get
solar energy in the form of heat and light.
 Solar energy, radiant light and heat
energy from the sun.
 It is the ultimate source for us.

3. Renewable
Air,
wind
Water,
tides
Soil,
plants

4.  Solar energy heats up the air near the earth.The
hot air become lighter and this rises up.This results
in low pressure area. Cooler air flows into wind.Thus
wind energy is due to solar energy. It is used for
production of electricity & sailing of boats.

5.  Solar energy causes water to evaporate from the
water bodies the water vapour rises to form clouds
and the clouds bring rain.The rain water flowing
downhill possesses kinetic energy this can be used
to generate electricity.

6.  Plants need sunlight for photosynthesis
which is used to prepare food.

7.  Non renewable means exhaustible. Like
petrol, diesel, kerosene
Non
renewable
energy
Fossil
Fuel
Oil Coal
Natural
gas

8.  The fossil fuels are formed when living thing get
embedded in the earth crust and go chemical
change. Life forms are due to solar energy.Thus
fossils fuels are also due to solar energy.

9.  Oil is a type of energy used in food
preparation of petrol diesel and kerosene.

10.  It is used in production of electricity.

11.  Natural gas is used in cooking

12.  The devices used to harness solar energy are
called solar devices.
Solar
devices
Solar
cooker
Solar
water
heater
Solar cells

13.  A solar cooker, or solar oven, is a device
which uses the energy of direct sunlight to
heat & cook food or drink.
 A reflective mirror of polished glass, metal or
metalized film concentrates light and heat
from the sun on a small cooking area, making
the energy more concentrated and increasing
its heating power.

17.  Solar water heaters are designed on the
same principle as the solar in solar water
heaters a copper pipe with its outer surface
painted black.

19.  The device that converts solar energy directly
into electrical energy are called solar cells.